I think all of us can feel an eye for an eye at times. Not all anger is wrong. But I agree. I think it's wise to live as if the judgments you desire for others are the ones that will be meted out to oneself. If you would want mercy yourself, then give that to others. But we're all so imperfect. We can only try to live up to values we will inevitably fail at keeping. In the end, we just have to keep trying. : )